One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,8)(5,6)(9,10)(11,14)(12,13)(15,16)(17,18,23,25)(19,27,24,21)(20,22,26,31)(28,30,32,29)(2,6)(7,8)(9,10)(11,14)(12,13)(15,16)(17,19,23,24)(18,21,25,27)(20,28,26,32)(22,29,31,30)(1,3,5,4)(2,7,6,8)(10,13)(14,16)(17,20)(18,22)(19,28)(21,29)(23,26)(24,32)(25,31)(27,30)(10,13)(14,16)(17,21,31,32,23,27,22,28)(18,24,20,30,25,19,26,29)(1,4,5,3)(2,7,6,8)(9,11,12,15)(10,14,13,16)(17,22,23,31)(18,20,25,26)(19,29,24,30)(21,28,27,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.